Completely restrained, unable to resist, M-style female athlete's orgasm training - Tsujimoto An SSNI-274

This club has a tradition of thoroughly abusing its female members and turning them into sex slaves. Every day, they tie up and assault new member Tsujimoto An in the sports storage room. Constantly humiliated by coaches and senior members, she has no one to talk to and can only endure it. This hellish existence will continue until the next new member joins the club—